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Properties of substance:

trimethylborane

Physical appearance:

colorless gas

Empirical formula (Hill's system for organic substances):

C3H9B

Structural formula as text:

(CH3)3B

CAS No: 593-90-8

Molar/atomic mass: 55.91

Melting point (°C):

-153

Boiling point (°C):

-21.8

Solubility (g/100 g of solvent):

water: difficulty soluble [Ref.]
diethyl ether: very soluble [Ref.]
ethanol: very soluble [Ref.]

Numerical data:

Interatomic distances (in pm): 111.4
Interatomic distances (in pm): 157.8

Density:

0.625 (-100°C, g/cm3)

Vapour pressure (Torr):

1 (-118°C)
2 (-113°C)
3 (-108°C)
4 (-103°C)
6 (-98°C)
10 (-93.3°C)
15 (-88.4°C)
21 (-83.5°C)
32 (-78.4°C)
43 (-73.8°C)
60 (-68.9°C)
82 (-64.1°C)
113 (-59.2°C)
147 (-54.3°C)
192 (-49.4°C)
253 (-44.5°C)
319 (-39.6°C)
406 (-34.6°C)
511 (-29.7°C)
759 (-20.2°C)

    Standard molar enthalpy (heat) of formation ΔfH0 (298.15 K, kJ/mol):

    -143.1 (l)

    Standard molar Gibbs energy of formation ΔfG0 (298.15 K, kJ/mol):

    -32.1 (l)

    Standard molar entropy S0 (298.15 K, J/mol·K):

    238.9 (l)

    Standard molar enthalpy (heat) of formation ΔfH0 (298.15 K, kJ/mol):

    -124.3 (g)

    Standard molar Gibbs energy of formation ΔfG0 (298.15 K, kJ/mol):

    -35.9 (g)

    Standard molar entropy S0 (298.15 K, J/mol·K):

    314.7 (g)

    Molar heat capacity at constant pressure Cp (298.15 K, J/mol·K):

    88.5 (g)

    References:

    1. A Textbook of inorganic chemistry. Organometallic compounds. - vol.XI, part 1. - London, 1928. - pp. 223
    2. CRC Handbook of Chemistry and Physics. - 90ed. - CRC Press, 2010. - pp. 3-506, 5-25
    3. Lewis R.J. Sax's Dangerous Properties of Industrial Materials. - 12ed., Vol. 1-5. - Wiley, 2012. - pp. 4415
    4. Краткая химическая энциклопедия. - Т. 1: А-Е. - М.: Советская энциклопедия, 1961. - pp. 460-461
    5. Некрасов Б.В. Основы общей химии. - Т.2. - М.: Химия, 1973. - pp. 496
    6. Справочник химика. - Т. 2. - Л.-М.: Химия, 1964. - pp. 538-539
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      © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru